2138868

Information

• Patent Grant
• 2138868

• References
• Source

• Patent Number

  2,138,868

• Date Filed

  Not available

• Date Issued

  Tuesday, December 6, 1938
  86 years ago

• CPC

  • C10M101/02 - Petroleum fractions
  • C10M159/04 - Petroleum fractions
  • C10M2203/10 - Petroleum or coal fractions
  • C10M2205/04 - containing aromatic monomers
  • C10N2230/02 - Viscosity or viscosity index

• US Classifications

  • 208 - Mineral oils: processes and products
  • 204 - Chemistry: electrical and wave energy
  • 585 - Chemistry of hydrocarbon compounds